None.
I spent this winter on a failed (lower cost) speaker cable mission. Tried the following:
- Blue Jeans 12 AWG - my existing wires
- Mogami 3103 - dark, slow
- Kimber 8TC - nice-ish mids and highs, light on the bass
- (Near)dost Valhalla 7N - Similar to Kimber
I returned to my BJC's for now. They sound good, but I am sure I could do better.
One difference with the BJC's is they have locking bananas on the amp end, spades on the speaker end, i.e. a very firm connection on both ends. All the other cables I tested were either standard spring metal bananas or BFA bananas.